Effect of Blending Asymmetry for Poly(L-lactic acid)/Poly(D-lactic acid) on Structural Change during Heating

被引：1

作者：

Yokoyama, Yuka ^{[1
]}

Uehara, Hiroki ^{[1
]}

Yamanobe, Takeshi ^{[1
]}

机构：

[1] Gunma Univ, Grad Sch Enginerring, Dept Chem & Chem Biol, 1-5-1 Tenjin Cho, Kiryu, Gunma 3768515, Japan

来源：

ADVANCED MICRO-DEVICE ENGINEERING III | 2013年 / 534卷

关键词：

poly(L-lactic acid); poly(D-lactic acid); asymmetry blend; in-situ measurement; X-ray diffraction; differential scanning calorimetry; ENANTIOMERIC POLY(LACTIC ACID)S; STEREOCOMPLEX FORMATION; POLY(D-LACTIC ACID); MECHANICAL-PROPERTIES; STEREO-COMPLEX; MORPHOLOGY; FILMS; MELT; PROPERTY; CRYSTAL;

D O I：

10.4028/www.scientific.net/KEM.534.71

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Stereo-complex (Sc) crystallinity and corresponding melting characteristics of poly(L-lactic acid)/poly(D-lactic acid) blend films depend on blending asymmetry. Two different mechanisms for Sc-crystallization are observed in this study. The symmetrical blend of PLLA/PDLA=50/50 gives a combination of alpha-form melting and subsequent Sc-crystallization during heating. In contrast, the asymmetrical blend of 75/25 film exhibits solid transformation from a-folin into Sc-form due to molecular slippage without melting.

引用

页码：71 / +

页数：2

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